file_frameElementWrapping.html

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<html>

    <script>

        function check(elt, expectAccess, prop) {

            var access = false;

            try {

                elt[prop];

                access = true;

            catch (e) {}

            return access === expectAccess;

        function sendMessage(success, sameOrigin, prop) {

            var result = success ? 'PASS' : 'FAIL';

            var message;

            if (sameOrigin)

                message = 'Can access |' + prop + '| if same origin';

            else

                message = 'Cannot access |' + prop + '| if not same origin';

            parent.postMessage(result + ',' + message, '*');

        var sameOrigin = location.host !== 'example.org';

        var pass = check(frameElement, sameOrigin, 'src');

        if (!pass) {

            sendMessage(false, sameOrigin, 'src');

        } else {

            pass = check(parent.location, sameOrigin, 'href');

            sendMessage(pass, sameOrigin, 'href');

    </script>

</html>